The Winsor and Newton Artisan oil colour range has been designed to look just like oil colours, but without the use of hazardous solvents, meaning it can be thinned and cleaned with just water. And because they are thicker paints, they can be thinned to your requirements so that you achieve the finish you are looking for.
Using oils to modify the pigment has allowed Winsor and Newton to create a range that allows each colour to showcase itself and be used through a wide spectrum of shades, while the sheen from each colour will be slightly different.